I keep bouncing off the Scheme language
The author, a self-proclaimed admirer of Scheme, admits a persistent struggle to 'think' in the language, attributing it to an 'ALGOL neurotype' that prefers sequential instruction and state management. This candid confession resonates deeply within the programming community, sparking a wide-ranging discussion on cognitive styles, practical implementation hurdles, and effective strategies for mastering challenging paradigms. It highlights the ongoing tension between appreciating a language's elegance and overcoming the mental models ingrained by other programming experiences.
The Lowdown
Despite naming his blog 'SICPers' after the foundational Scheme textbook, the author, ingve, openly confesses his repeated failure to internalize the Scheme programming language. He describes a significant disconnect between his ability to read Scheme code and his difficulty in writing it, attributing this to an 'ALGOL neurotype' that naturally thinks in terms of sequential instructions and explicit memory manipulation.
- The author acknowledges his inconsistent experience with LISP dialects, having only basic familiarity with Emacs Lisp. He notes comfort in understanding LLM-generated Racket code, demonstrating his ability to comprehend existing Scheme-like logic.
- His core struggle lies in shifting his mental model from traditional imperative programming (which he honed through decades with OOP languages like Java and Smalltalk-80) to Scheme's symbolic manipulation.
- This cognitive barrier has led him to abandon Scheme for personal projects, such as web applications, in favor of ALGOL-based languages like Go, even when considering Scheme-based frameworks.
- Despite these challenges, he expresses a strong desire to contribute to the GNU Guix and GNU Shepherd ecosystems, both of which are Scheme-centric. He views this post as a public commitment to overcome his mental block and embrace Scheme.
The author's vulnerability reveals a common dilemma among programmers: the gap between appreciating a language's theoretical elegance and successfully adopting its distinct way of thinking for practical application, a challenge he is determined to surmount.
The Gossip
Guile's Grievances: Developer Experience Woes
Commenters highlight significant practical challenges with specific Scheme implementations, particularly Guile. Complaints include opaque error messages, inconsistent and incomplete documentation, confusing module naming conventions (e.g., numbered SRFIs), and a proliferation of incompatible ways to define data structures. This friction in the development experience is cited as a major barrier to adoption, even for those who appreciate Scheme's elegance.
Cognitive Conundrums: Unpacking the 'Neurotype' & Learning Strategies
The author's idea of an 'ALGOL neurotype' sparked debate. Many commenters challenge this notion, suggesting that difficulty with Scheme stems from inadequate practice rather than an innate cognitive style, emphasizing that Scheme can indeed support imperative thinking. Practical advice for overcoming the learning curve includes consistent daily practice with small problems (like Leetcode) to build fluency, gradually integrating Scheme idioms into imperative code, and utilizing resources like 'The Little Schemer' books designed to cultivate Scheme-native thought patterns.
Paradigm Ponderings: Scheme's Role & Alternatives
The discussion explores Scheme's identity, with some arguing it excels as a teaching tool for foundational programming concepts but is less suited for general practical tasks due to its inherent differences from natural human imperative thought. Alternatives or bridges proposed include 'Rhombus' (a Python-like syntax for Racket) for familiarity, or Common Lisp for its ability to blend Scheme-like and imperative styles. There's also curiosity about minimalist languages that embrace other paradigms, like the actor model, while retaining Scheme's 'taste.'